So I have been researching what my cdc emerger might look like for the swap. I have seen patterns vary from very dark to very light, with an almost olive grey body and white CDC, to very dark body with dark dun CDC. There seems to be a prevailing wisdom that early season sulphurs are lighter, and later season sulphurs are darker. While I don't wish to debate that with anyone (as I am not qualified) I DO want to tie a fly that most of the participants will find useful and hopefully catch a fish with.

My brother gave me a sulphur gift set from FFP in State College last year, and they are very dark with about a medium dun wing.

I am comfortable with my skills, but I am torn as to what color pattern would be most appropriate. Does anyone care to chime in, or should I just surprise everyone?

I also have been researching patterns and found that the lighter colors are common with the smaller sulphers, which I have seen later in the month/hatch. This color variation is mostly in the nymph stage, as the adults colors seem to be consistent in all sizes, which vary from stream to stream. So again, go with the surprise approach.

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"When one feels the rush of cold water against his waders, and pits his skill against the natural instincts and wariness of the trout, everything else is lost in the sheer joy of the moment."